I have a rust problem on my 2007 toyota 4runner. the frame around the sunroof is rusted (it is causing bubbling and flaking in several places). no other rust on vehicle since it has only 35,000 miles on it. seems premature that this would happen. warranty ran out last month and toyota is saying the rust needs to have corrosion perforation in order for it to be covered under the 5 year plan. as we all know rust left unattended will eventually perforate the metal. if anyone else has had this experience how have they handled it? thank you.